Any decent doctor who does this should also have you do a psychological assessment. It won’t hurt for you to see what the operation is about. It also won’t hurt to face the reasons why you eat. For many people this operation has been a lifesaver. If you don’t deal with the underlying issues then you will struggle. For other people it has become a path to torment. Please go into this with your eyes wide open and a suitcase of tools to deal with it.